本文關(guān)鍵詞：高性能固體浮力材料的制備及性能研究　出處：《中國(guó)海洋大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 固體浮力材料 空心玻璃微珠 復(fù)合泡沫材料 高體積分?jǐn)?shù) 真空模壓法 人工造孔

【摘要】：隨著人類對(duì)海洋資源探索的深入和海洋探測(cè)設(shè)備的優(yōu)化,固體浮力材料逐漸成為研究的重點(diǎn),而以空心玻璃微珠填充環(huán)氧樹脂制備的復(fù)合泡沫材料以其低密度、高強(qiáng)度性能被用作固體浮力材料。對(duì)于用作深海作業(yè)的固體浮力材料,要求其能承受一定靜水壓力的同時(shí)還要具有很小的密度和吸水率,這一般都是從提高空心玻璃微珠體積分?jǐn)?shù)的方向上來實(shí)現(xiàn)：而我們?cè)谇捌谘芯康幕A(chǔ)之上采用真空模壓技術(shù)制備了高體積分?jǐn)?shù)空心玻璃微珠(體積分?jǐn)?shù)為65%-70%)的復(fù)合泡沫材料,并對(duì)其結(jié)構(gòu)及性能之間的關(guān)系進(jìn)行規(guī)律性探索研究；繼而對(duì)空心玻璃微珠體積分?jǐn)?shù)為68%的復(fù)合泡沫材料進(jìn)行人工造孔,以達(dá)到在保證其他性能基本不變的情況下進(jìn)一步地使密度降低的效果,對(duì)人工造孔材料作性能分析,并對(duì)實(shí)際造孔材料的預(yù)期性能進(jìn)行分析總結(jié)。本文采用牌號(hào)為HGS8000X的空心玻璃微珠(密度0.42g/cm3,抗壓強(qiáng)度55.2MPa)作為輕質(zhì)填充物,采用真空輔助模壓成型方法在6MPa的成型壓力下制備了空心玻璃微珠體積分?jǐn)?shù)為65%-70%環(huán)氧樹脂基復(fù)合泡沫材料；其中,當(dāng)空心玻璃微珠的體積分?jǐn)?shù)在67%-69%之間時(shí),復(fù)合泡沫材料可以在較小的犧牲材料其它性能情況下有效地降低密度,其吸水率基本上小于1%；而當(dāng)空心玻璃微珠的體積分?jǐn)?shù)為70%時(shí),復(fù)合泡沫材料的各類性能急劇下降；由于環(huán)氧樹脂的體積分?jǐn)?shù)的降低導(dǎo)致其相對(duì)缺失而引起的復(fù)合泡沫材料顯微結(jié)構(gòu)和空心玻璃微珠受力狀態(tài)的改變,從而導(dǎo)致高體積分?jǐn)?shù)空心玻璃微珠填充環(huán)氧樹脂制備的復(fù)合泡沫材料的性能的變化。我們進(jìn)一步把空心玻璃微珠體積分?jǐn)?shù)為68%的復(fù)合泡沫材料作為研究對(duì)象,通過人工造孔的方式來降低材料的密度,探索造孔半徑r和孔底到受壓面的距離d之比(r/d)對(duì)復(fù)合泡沫材料密度、吸水率以及耐靜水壓性能的影響規(guī)律,并對(duì)實(shí)際材料的造孔預(yù)期性能進(jìn)行分析總結(jié)：人工造孔可以在一定程度上降低材料的密度,當(dāng)r/d分別為2/3、1/2和1/3時(shí),人工造孔復(fù)合泡沫材料的密度降低；而當(dāng)r/d分別為1/4和1/5時(shí),人工造孔復(fù)合泡沫材料的密度不降反升；人工造孔復(fù)合泡沫材料經(jīng)過45～80MPa,24h的靜水壓的條件下打壓后,當(dāng)r/d分別為2/3和1/2的人工造孔復(fù)合泡沫材料可以承受60MPa靜水壓強(qiáng),而r/d為1/3的人工造孔復(fù)合泡沫材料可以承受75MPa靜水壓強(qiáng),性能較好；通過對(duì)人工造單孔的材料性能的分析,我們構(gòu)造了一個(gè)以簡(jiǎn)單立方點(diǎn)陣排列方式進(jìn)行人工造孔的設(shè)計(jì)圖,從理論上探索了設(shè)計(jì)方案的性能,并說明了相對(duì)于直接用空心玻璃微珠填充環(huán)氧樹脂體系制備的復(fù)合泡沫材料,人工造孔復(fù)合泡沫材料在達(dá)到相同的密度可以承受比更高靜水壓力。
[Abstract]:With the exploration of marine resources and the optimization of marine exploration equipment, solid buoyancy materials gradually become the focus of research, and the composite foam materials filled with hollow glass beads are low density. High strength performance is used as solid buoyancy material. For the solid buoyancy material used in deep-sea operation, it is required that it can withstand a certain hydrostatic pressure, but also have a very small density and water absorption. This is generally achieved in the direction of increasing the volume fraction of hollow glass beads. On the basis of previous studies, we prepared hollow glass beads with high volume fraction (. A composite foam material with a volume fraction of 65 to 70. The relationship between structure and performance is studied. Then the hollow glass beads with volume fraction of 68% composite foam materials were artificially made to achieve the effect of further reducing the density while ensuring other properties are basically unchanged. The properties of artificial pore-making materials were analyzed and the expected properties of actual pore-making materials were analyzed and summarized. Hollow glass beads (density 0.42g / cm ~ 3) were used in this paper. The compressive strength is 55.2 MPA) as a lightweight filler. The hollow glass beads with volume fraction of 65% -70% epoxy resin based composite foams were prepared by vacuum assisted molding under 6MPa pressure. When the volume fraction of hollow glass beads is between 67% and 69%, the composite foam material can effectively reduce the density under the condition of smaller sacrificial material other properties, and its water absorption is basically less than 1%. When the volume fraction of hollow glass beads is 70, the properties of composite foam materials decrease sharply. Due to the decrease of the volume fraction of epoxy resin, the microstructure of composite foams and the mechanical state of hollow glass beads were changed due to the relative absence of epoxy resin. Therefore, the properties of the composite foam materials filled with high volume fraction hollow glass beads filled with epoxy resin are changed. We further take the composite foam materials with hollow glass beads volume fraction of 68% as the object of study. . The density of composite foams was reduced by artificial pore making, and the influence of the radius r and the ratio of the hole radius to the pressure surface d on the density, water absorption and hydrostatic pressure resistance of composite foams were explored. The expected performance of the actual material is analyzed and summarized: artificial pore making can reduce the density of the material to some extent, when r / d is 2 / 3 / 1 / 2 and 1/3 respectively. The density of artificial porous composite foam was decreased. When r / d was 1/4 and 1/5 respectively, the density of artificial porous composite foam increased instead of decreasing. The artificial porous composite foams were compressed under the hydrostatic pressure of 45 ~ 80MPa ~ (-1) for 24 h. When r / d is 2/3 and 1/2 respectively, the artificial porous composite foams can withstand 60MPa hydrostatic pressure. The artificial porous composite foam with r / d = 1/3 can withstand 75 MPA hydrostatic pressure and has good performance. Based on the analysis of the material performance of artificial single hole, we construct a design diagram of artificial hole making with simple cubic lattice arrangement, and explore the performance of the design scheme theoretically. Compared with the composite foams filled directly with hollow glass beads, the artificial porous composite foams can withstand higher hydrostatic pressure at the same density.
【學(xué)位授予單位】：中國(guó)海洋大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TB33

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